Invidia Gemini R400 Full Titanium Exhaust System | Honda Civic Type R | FK8 2.0T K20C1 | 2017+DESCRIPTION Gemini R400 Full Titanium is the newest in the line up of high performance cat back exhaust systems by Invidia. Works with OEM factory rear bumper and features the all new single slant cut titanium tips with engraved Invidia logo. The triple tip Invidia Gemini R400 exhaust system features a single layer style tip exhaust for a robust and aggressive look. The R400 features independent muffler resonators for each tip to reduce weight and